releases.md in rackup-2.2.0 vs releases.md in rackup-2.2.1

@@ -3,5 +3,22 @@
 All notable changes to this project will be documented in this file. For info on how to format all future additions to this file please reference [Keep A Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## v2.2.0
 
   - Remove old rack shims.
+  - Remove `webrick` dependency.
+
+## v2.1.0
+
+  - Correctly support streaming responses with `webrick`.
+
+## v2.0.0
+
+  - Initial release and migration of code from `rack`.
+
+## v1.0.1
+
+  - Fix `rackup.rb` invalid requires.
+
+## v1.0.0
+
+  - Initial release of empty shim for Rack v2.